Patents Assigned to Innogyps, Inc.
  • Fungus resistant gypsum-based substrate
    Patent number: 6703331
    Abstract: The present invention relates to a fungus resistant gypsum board, made of first and second polymeric fibrous sheets with a gypsum core sandwiched there between. The gypsum core containing less than 0.03% of formulation additives that serve as fungus nutrients and less than 0.5% of the dry gypsum core contains of fungus nutrients. The fibrous sheets are preferably nonwovens and the gypsum core preferably contains a fungicide. The invention is also directed to a process for making a fungus resistant gypsum board.
    Type: Grant
    Filed: February 25, 2000
    Date of Patent: March 9, 2004
    Assignees: E. I. du Pont de Nemours and Company, Innogyps, Inc.
    Inventors: Robert B. Bruce, David M. Harriss